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चार महीने का बच्चा कैसे बना अरब़पति

चार महीने का बच्चा कैसे बना अरब़पति? जन्म के सिर्फ चार माह बाद यदि कोई बच्चा अरबपति बन जाए तो इसे उसकी किस्मत ही कहेंगे। भारत के एकाग्रह रोहन मूर्ति नाम के बच्चे की किस्मत कुछ इसी प्रकार चमकी है। देश की दूसरी सबसे बड़ी आइटी कम्पनी इंफोसिस के फाउंडर नारायण मूर्ति ने सोमवार अपने चार महीने के पोते एकाग्रह मूर्ति को 240 करोड़ रूपए के शेयरों की हिस्सेदारी का तोहफा देकर उसे शायद देश का सबसे कम उम्र का अरबपति बना दिया है। BSE की फाइलिंग के अनुसार इंफोसिस में अब एकाग्रह रोहन की 15 लाख शेयरों की हिस्सेदारी हो गई है। इसका मतलब अब एकाग्रह रोहन इंफोसिस का 0.04% का हिस्सेदार है। शेयरों के स्थानान्तरण के बाद नारायण मूर्ति के पास कम्पनी के कुल शेयरों का 0.36% हिस्सा बचा है। जिस समय नारायण मूर्ति द्वारा अपने पोते को शेयर देने की खबर बाई उस समय इंफोसिस के शेयरों में गिरावट देखने को मिल रही थी। एकाग्रह रोहन, नारायण मूर्ति तथा सुधा मूर्ति के बेट रोहन मूर्ति और उनकी पत्नि अर्पणा कृष्णन का बेटा है। आपको यह पता होगा कि नोरायण मूर्ति ने अपनी पत्नि सुधा मूर्ति से 10 हजार रूपए उधार लेकर 1981 में इंफोसिस क

Van der Waals equation


    Andrews experimental PV curve and state of continuity

  • The slope of tangent drawn on critical point is opposite on either side of this point.
  • The isothermal curve touching the critical point is critical isothermal.
  • The temperature, pressure and volume corresponding to critical point are known as critical temperature (Tc), critical pressure (Pc) and critical volume (Vc) respectively.
  • Pc, Vc and Tc are combindly known as critical constants.
  • Conclusion of Andrews experimental curve

  • Any gas can be liquified below its critical temperature.
  • Every gas has a critical temperature above which the gas can not be liquified by increasing pressure.
  • At critical temperature, the density of liquid and its saturated vapour are equal. Above this temperature we can not distinguish between the two states.
  • Near critical temperature, the compressibility of gas is very high and it become infinitive at critical temperature.
  • Above critical temperature, the gas behaves as permanent gas.
  • The liquid and gaseous state of substance are consistent and they are two distinct states of a long and continuous physical variation.
  • Van der Waal equation

  • In derving the equation of ideal gas we assumed that
  • The gaseous molecules are infinitely smaller so that the volume occupied by them is negligible in comparison to the total volume of the gas, whereas the gaseous molecules have finite size.
  • The molecules does not attract each other, whereas they mutually attract each other.
  • So two corrections should be required for real gas equation, which are
  • Correction for finite size of molecule and
  • Correction for intermolecular attraction.
  • On the basis of it, the equation of state for real gas or Van der Waal equation of state is
  • (P+an2/V2)(V - nb) = RT.
  • NOTE

  • The present lecture is a bilingual lecture, in which every step is explained in Hindi and in English language. Van der Waal equation of state is very important in Thermodynamics. In the present lecture the Van der Waal equation is explained in a well systematic way.

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